Output Messages > NMEA-0183 Messages > Common message elements

NMEA-0183 messages: Common message elements

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Each message contains:

The following example shows a simple message with a message ID ($GPGGA), followed by 13 fields and a checksum value:


Message values

NMEA messages that the receiver generates contains the following values:

Value Description
Latitude and Longitude

Latitude is represented as ddmm.mmmm and longitude is represented as dddmm.mmmm, where:

  • dd or ddd is degrees
  • mm.mmmm is minutes and decimal fractions of minutes
Direction Direction (north, south, east, or west) is represented by a single character: N , S , E , or W.

Time values are presented in Universal Time Coordinated (UTC) and are represented as hhmmss.ss, where:

  • hh is hours, from 00 through 23
  • mm is minutes
  • ss.ss is seconds with variable length decimal-fraction of seconds